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MERCEDES-BENZ 300SEL CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT MERCEDES-BENZ REPAIR SHOPS DON'T WANT YOU TO KNOW
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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about MERCEDES-BENZ 300SEL car and truck
repair procedures including MERCEDES-BENZ engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work
guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up &
drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install
procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c
system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix
your MERCEDES-BENZ 300SEL automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR MERCEDES-BENZ 300SEL AUTOMOBILES
Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported MERCEDES-BENZ 300SEL cars and light trucks from 1990+
Mercedes-Benz -> Component Replacement & Adjustment -> RECEIVER-DRIER, REPLACE -> 201 SERIES
Vehicle: 1991 MERCEDES-BENZ 300SEL 3.0 L6 GAS
201 SERIES
- Recover refrigerant from A/C system.
- Disconnect plugs from pressure switches.
- Remove both pressure switches from receiver-drier.
- Disconnect and plug receiver-drier A/C lines.
- Remove two mounting screws, then the...
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BRAKE SERVICE PROCEDURES FOR MERCEDES-BENZ 300SEL AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported MERCEDES-BENZ 300SEL cars and light trucks from 1990+.
MERCEDES-BENZ -> REAR DISC BRAKE SERVICE -> 190D & E, 260E & 300CE, E & TE -> Assembly -> BRAKE CALIPER, REPLACE -> BRAKE PADS, REPLACE -> CALIPER OVERHAUL -> Disassembly -> EXCEPT 190D & E, 260E & 300CE, E & TE -> Inspection -> TEVES, BENDIX & GIRLING TYPE CALIPERS
Vehicle: 1991 MERCEDES-BENZ 300SEL 3.0 L6 GAS
BRAKE CALIPER, REPLACE
EXCEPT 190D & E, 260E & 300CE, E & TE
- Open caliper bleeder screw, and pump brake fluid from rear brake circuit.
- On 1st version (early production) vehicles or vehicles with starting torque compensation, disconnect and cap brake line from caliper assembly, Fig. .
- On 2nd version (later production) vehicles, loosen frame floor bracket brake hose from brake line. Disconnect brake line from caliper. Cap all open connections.
- On all models, loosen locking plate, if so equipped.
- Remove caliper attaching bolts.
- Reverse procedure to install, noting the following:
- Wh...
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FUEL FILTER REPLACEMENT PROCEDURES FOR MERCEDES-BENZ 300SEL AUTOMOBILES
Fuel filter replacement procedures with corresponding images for most domestic and imported MERCEDES-BENZ 300SEL cars and light trucks sold in the U.S. for 1980+.
Mercedes-Benz -> Fuel Filter Replacement -> Except 2003-06 E320 & E500 Sedans Less 4 Matic & 2004-06 E Series w/Gasoline Engines -> Fuel System Pressure Relief -> Removal & Installation
Vehicle: 1991 MERCEDES-BENZ 300SEL 3.0 L6 GAS
Fuel System Pressure Relief
Do not smoke or allow an open flame of any type when working on or near any fuel system related components. The highly flammable vapor mixtures may ignite, resulting in serious personal injury.
Prior to disconnecting fuel lines, the fuel system pressure must be relieved to prevent accidental fuel spray.
After the battery has been disconnected and reconnected, some abnormal driveability symptoms may occur. The vehicle may need to be driven while it relearns its adaptive strategy.
- Ensure t...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR MERCEDES-BENZ 300SEL AUTOMOBILES
Includes CV axle, universal joint, and driveline replacement, for domestic and imported MERCEDES-BENZ 300SEL cars and light trucks from 1990+.
DRIVESHAFT, Replace
Vehicle: 1991 MERCEDES-BENZ 300SEL 3.0 L6 GAS
- Raise vehicle and support.
- Unscrew exhaust shielding plate.
- On models with 4MATIC, unscrew exhaust shielding plate.
- Lift transmission and support.
- Unscrew hex, head screws and hex nut and remove rear engine carrier with engine mount.
- Unscrew cross bridge.
- On all models, loosen propeller shaft clamping nut for approx. two turns without sliding back rubber sleeve (sliding along).
- Remove front propeller shaft from transmission. Flexible coupling remains on propeller shaft.
- Remove front propeller shaft from transfer case.
- Prior to sliding back propeller shaft, loosen vulcanized fitted ...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR MERCEDES-BENZ 300SEL AUTOMOBILES
Includes starter and alternator replacement procedures for domestic and imported MERCEDES-BENZ 300SEL cars and light trucks from 1990+.
Starter, Replace
Vehicle: 1991 MERCEDES-BENZ 300SEL 3.0 L6 GAS
- Disconnect battery ground cable at battery.
- Remove electrical connections at alt...
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MAINTENANCE LAMP RESET PROCEDURES FOR MERCEDES-BENZ 300SEL AUTOMOBILES
Maintenance lamp reset procedures with corresponding images for most domestic and imported MERCEDES-BENZ 300SEL cars and light trucks sold in the U.S. from 1990+.
Mercedes-Benz -> Air Bag Off Lamp ->
Vehicle: 1990 MERCEDES-BENZ 300SEL 3.0 L6 GAS
The Air Bag Off should illuminate for 6 seconds when the ignition switch is placed in the On position. The lamp will illuminate when the specified child safety seat has been properly installed on the passenger front seat, indicating that the front passenger ...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR MERCEDES-BENZ 300SEL AUTOMOBILES
Includes radiator, cooling and heater hose replacement procedures for domestic and imported MERCEDES-BENZ 300SEL cars and light trucks from 1990+
Radiator, Replace
Vehicle: 1990 MERCEDES-BENZ 300SEL 3.0 L6 GAS
- Drain coolant into a suitable container.
- Remove bottom engine compartment panel.
- Remove coolant hoses from coolant pump.
- Remove coolant overflow hose from radiator.
- Remove screw holding air scoop and from air scoop from air filter.
- Remove fan cowl and place over fan.
- Remove radiator cover sc...
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SERPENTINE BELT SERVICE PROCEDURES FOR MERCEDES-BENZ 300SEL AUTOMOBILES
Serpentine belt replacement procedures with corresponding images for most domestic and imported MERCEDES-BENZ 300SEL cars and light trucks sold in the U.S. from 1990+.
Serpentine Drive Belt, Replace
Vehicle: 1991 MERCEDES-BENZ 300SEL 3.0 L6 GAS
- Remove fan and fan shroud.
- Rotate tensioner counterclockwise using suitable tool to remove drive belt.
- Remove drive belt.
- Clean and i...
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COMPONENT LOCATION DIAGRAMS FOR MERCEDES-BENZ 300SEL AUTOMOBILES
Component location diagrams for most MERCEDES-BENZ 300SEL cars and light trucks sold in the U.S. from 1990+.
 LH Side Of Transmission Diagram for 1990 MERCEDES-BENZ 300SEL 3.0 L6 GASComponents on diagram: |
 Below Center Of Vehicle Diagram for 1989 MERCEDES-BENZ 300SEL 3.0 L6 GASComponents on diagram: |
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WIRING DIAGRAMS FOR MERCEDES-BENZ 300SEL AUTOMOBILES
OEM drawn wiring diagrams for most MERCEDES-BENZ 300SEL cars and light trucks sold in the U.S.
 1990 MERCEDES-BENZ 300SEL 3.0 L6 GAS Wiring DiagramComponents on diagram: |
 1991 MERCEDES-BENZ 300SEL 3.0 L6 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR MERCEDES-BENZ 300SEL AUTOMOBILES
OEM TSB listings for most MERCEDES-BENZ 300SEL cars and light trucks sold in the U.S. from 1985+.
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Document: AUXILIARY FANS INOP - MODIFIED RELAY Vehicle: 1989 MERCEDES-BENZ 300SEL 3.0 L6 GAS Auto Systems: |
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Document: OPERATING FLUID SPECIFICATION CHANGES FOR AUTOMATIC TRANSMISSIONS Vehicle: 1989 MERCEDES-BENZ 300SEL 3.0 L6 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR MERCEDES-BENZ 300SEL AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most MERCEDES-BENZ 300SEL cars and light trucks sold in the U.S. and Canada from 1970+.
- Brake caliper mounting bolt torque
- Brake drum runout, machining, & discard specs
- Minimum brake lining thickness.
- Brake rotor runout, parallelism, machining, discard, & finish specs
A/C SYSTEM SPECIFICATIONS: Air conditioning refrigerant capacity and type as well as lubricant capacity for most MERCEDES-BENZ 300SEL cars and light trucks sold in the U.S. and Canada from 1980+.
- Refrigerant capacity & type, compressor oil viscosity, total system oil capacity & compressor clutch gap
COOLING SYSTEM BLEED: Cooling system bleeder valve identification, bleeder type and bleed procedures for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1986+.
PREVENTIVE MAINTENANCE: Preventive maintenance recommendations and required services for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1980+. Includes severe and routine service schedules
QUICK-LUBE and ILLUSTRATIONS: Fluid recommendations, capacities, drain plug torques, tire data, and severe service recommended preventive maintenance schedules. Information covers most MERCEDES-BENZ 300SEL cars and light trucks sold in the U.S. and Canada from 1980+. Engine and chassis service images.
- Automatic transmission/transaxles capacities, lubricant recommendations
- Differential/final drive capacities, lube recommendations, grades, & viscosities
- Final drive fill & drain plug torques
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Manual transmission/transaxle capacities, lube recommendations, grades, & viscosities
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Engine oil capacities, API grade recommendations, SAE viscosity recommendations, drain plug torque
- Severe service maintenance & interval recommendations
- Tire sizes, wheel nut/bolt torque, pressures & rim sizes
- Transfer case capacities, lube recommendations, grades, & viscosities
TUNE-UP & DRIVEABILITY SPECIFICATIONS: Most tune-up specifications for most MERCEDES-BENZ 300SEL cars and light trucks sold in the U.S. and Canada from 1980+
- Airflow sensor electrical specifications
- Tensioning specifications for systems with automatic tensioners
- Barometric pressure sensor specs
- Battery group number and cranking performance
- Crankshaft & camshaft position sensor resistance
- Engine compression pressures
- Coolant temperature sensor specs
- Computer advance.
- Diesel fuel temperature sensor resistance.
- Distributor advance specifications
- Ignition pickup coil resistance
- Exhaust gas recirculation temperature sensor resistance
- Engine fastener torque values
- Firing order diagrams
- Fuel system pressures
- Generator (alternator) specs
- Intake air temperature sensor specs
- Ignition coil specifications
- Fuel injector resistance
- Engine idle speeds
- Knock sensor resistance
- Manifold absolute pressure sensor specs
- Mixture control solenoid resistance
- Voltage regulator specs
- Spark plug applications & gaps
- Starter motor electrical specs.
- Tensioning specifications for systems without automatic tensioners
- Throttle body temperature sensor resistance
- Ignition timing in degrees at rpm
- Transmission oil temperature sensor resistance
- Throttle position sensor specs
- Vacuum sensor valve specs
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